CIA Director David Petraeus speaks to members of a Senate (Select) Intelligence hearing on "World Wide Threats" on Capitol Hill in Washington in this January 31, 2012 file photo. CIA Director David Petraeus has submitted a letter of resignation to President Barack Obama, Director of National Intelligence James Clapper said on November 9, 2012. REUTERS/Kevin Lamarque/Files (UNITED STATES - Tags: POLITICS HEADSHOT)
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